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3 years ago

Which set of words below make the following statement about energy correct?

Physics

1 answer:

AVprozaik [17]3 years ago

3 0

Answer:

created, destroyed, transforms

Explanation:

Energy cannot be created nor destroyed.

Energy is transformed from one form to another form.

This is the postulate of the law of conservation of energy.

Energy is neither created nor destroyed simply implies that energy is not produce in any system. Nor is it destroyed.

What we have is energy transformation from one form to another.

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Suppose two comets, comet A and comet B, were orbiting the sun, having the same average orbital radii. If comet A had a higher o

zhannawk [14.2K]

Answer:

a. A

Explanation:

Kepler's First Law says that the orbits of planets are ellipses with the sun at one focus of the ellipse. Moreover, Kepler’s Second Law says that the line joining the planet to the sun sweeps out equal areas in equal times as it moves along its orbit. Finally, Kepler’s Third Law says that the ratio of the squares of the periods for two planets is equal to the ratio of the cubes of their semi-major axes.

By these laws, the comet A will have lower orbital speed.

3 0

3 years ago

At what angle should the player aim the ball if it is thrown from a height of 8.5 ftft with a speed of 28 ft/sft/s?

pav-90 [236]

Answer:

θ = 56.09°

Explanation:

Given that

h = 8.5 ft

speed ,u= 28 ft/s

We know that acceleration due to gravity g

g= 32.2 ft/s²

The maximum height h is given as

$h=\dfrac{u^2sin^2\theta}{2g}$

Now by putting the values

$8.5=\dfrac{28^2sin^2\theta}{2\times 32.2}$

$sin^2\theta=0.69$

$sin\theta=0.83$

θ = 56.09°

Therefore the angle will be θ = 56.09°

7 0

4 years ago

Well into the twentieth century, many scientists believed the ocean floor was

blagie [28]

Many scientist believed the ocean floor is FLAT

3 0

4 years ago

Read 2 more answers

Mass Energy Equivalence<br> 1) Calculate the energy that 1.5 kg of mass contains

Eddi Din [679]

Answer:

E=mc^2=1.5*3*10^8=4.5*10^8 J

Explanation:

Plug your mass into E=mc^2. You know the value of c and m is already in SI Units

8 0

4 years ago

he plates each have an area of 2 x 10-3 m2, and the spacing between the plates is 6 x 10-3 m. There is no dielectric between the

Serhud [2]

Complete question:

The left plate of a parallel plate capacitor carries a positive charge Q, and the right plate carries a negative charge -Q. The magnitude of the electric field between the plates is 100 kV/m. The plates each have an area of 2 x 10⁻³ m², and the spacing between the plates is 6 x 10⁻³ m. There is no dielectric between the plates. What is the charge on the capacitor?

Answer:

The charge on the capacitor is 1.77nC

Explanation:

Given;

magnitude of electric field between the plates, E = 100 kV/m

Area of each plate, A = 2 x 10⁻³ m²

Distance between the plates, d = 6 x 10⁻³ m

Charge on the capacitor is calculated as;

Q = CV

V = Ed

$C = \epsilon_o \frac{A}{d}$

$Q = CV = \epsilon_o \frac{A}{d}*Ed\\\\ Q = \epsilon_o AE\\\\Q = 8.85*10^{-12} *2*10^{-3}* 100,000\\\\Q = 1.77 *10^{-9} \ C\\Q = 1.77 \ nC$

Therefore, the charge on the capacitor is 1.77nC

8 0

4 years ago